DHAKA, July 24 (Reuters) - Bangladeshi military officials on Thursday accused Indian troops of killing four civilians after a clash a week ago that briefly forced the closure of a crossing point between the two countries.

Bangladesh Rifles (BDR) border guard operations commander Colonel Abdul Halim said that most of those killed at different times over the past week were farmers who lived close to the frontier.

He said they were shot and killed in unprovoked attacks by the Indian Border Security Force (BSF).

Bangladesh has lodged a formal protest with India over the killing of two of its border guards in the country's northern Chapainawabganj district on July 17.

Bangladeshi border guards returned fire in that incident, Halim said, killing one Indian guard.